Chemical Formulas and Equations Quiz

What is a chemical change?

• A change that involves one substance being pulled apart or combined with another substance to form a completely different substance or substances

• A change that involves one substance being pulled apart or combined with another substance to form the same substance

• A change that involves one substance being pulled apart or combined with another substance to form a mixture

• A change that involves one substance being pulled apart or combined with another substance to form a gas

What is a chemical equation?

• A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of elements in a substance

• A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of molecules in a substance

• A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of atoms that are present in the smallest unit of a substance

• Chemical formulas and symbols written to represent a reaction

What is a product in a chemical reaction?

• A substance that takes part in and undergoes change during a chemical reaction

• A substance produced during a chemical reaction

• A substance that remains unchanged during a chemical reaction

• A substance that is added to a chemical reaction to speed it up

What is a reactant in a chemical reaction?

• A substance that takes part in and undergoes change during a chemical reaction

• A substance produced during a chemical reaction

• A substance that remains unchanged during a chemical reaction

• A substance that is added to a chemical reaction to speed it up

What is a coefficient in a chemical equation?

• A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present

• A number written below and to the right of a chemical symbol that shows the number of molecules present

• A number placed in front of a chemical symbol or formula that represents the number of atoms

• A number placed in front of a chemical symbol or formula that represents the number of molecules

What is a subscript in a chemical formula?

• A number placed in front of a chemical symbol or formula that represents the number of atoms

• A number written below and to the right of a chemical symbol that shows the number of molecules present

• A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present

• A number placed in front of a chemical symbol or formula that represents the number of molecules

What is the chemical formula for glucose?

• H2O

• CO2

• C6H12O6

• NaCl

What is the law of conservation of energy?

• A scientific law stating that energy can only be destroyed

• A scientific law stating that energy can be neither created nor destroyed but just changes form

• A scientific law stating that energy can be created and destroyed

• A scientific law stating that energy can only be created

What is a chemical reaction?

• The process by which one or more substances change to produce one or more different substances

• The process by which one substance changes to produce the same substance

• The process by which one or more substances change to produce a mixture

• The process by which one or more substances change to produce a gas

What is the chemical formula for carbon?

• C

• NaCl

• CO2

• H2O